SMA SC 500CP-US-10 600V - Manual (Page 76)

10 Setting the Insulation Monitoring of the PV Plant SMA America, LLC
76 SCCP-US-BE-US_en-52 Operating Manual
10 Setting the Insulation Monitoring of the PV Plant
This section provides an overview on how to operate the optional insulation monitoring.
10.1 Setting the Insulation Monitoring of the PV Plant with Advanced Remote
GFDI and an Insulation Monitoring Device
10.1.1 Information on Insulating PV Modules Equipped with Advanced Remote
GFDI and Insulation Monitoring Device
Ground fault monitoring with Advanced Remote GFDI does not provide protection from injury.
The "Advanced Remote GFDI and insulation monitoring device" option allows for an automatic switching of the PV array
from grounded operation to insulated operation. To ensure that there is no insulation error on the grounded terminal, an
insulation measurement is carried out. After switching to insulated operation, the insulation monitoring device checks each
terminal of the PV array for potential insulation errors.
Switching to insulated operation is useful whenever you need to perform maintenance or service work on or near the
PV array (e.g. cutting the grass) or check the status of the insulation at regular intervals.
10.1.2 Switching to Insulated Operation
• Set the parameter RemMntSvc to On (see Section 6.2 "Changing Parameters", page 51).
☑ The warning 3517 ‒ Isolated mode, isolation detection is displayed.
✖ After a waiting time of approximately 15 minutes has expired, the insulation monitoring is activated. The error
message 3501 ‒ Insulation Failure is displayed.
The insulation is defective.
• Have the insulation checked and, if necessary, repaired by a qualified person.
• Acknowledge the error (see Section 11.3, page 78).
10.1.3 Switching to Grounded Operation
Switching to grounded operation is only possible if no insulation errors have been detected.
• Set the parameter RemMntSvc to Off (see Section 6.2 "Changing Parameters", page 51).
or
• After a ground fault:
– Turn the key switch to Stop and then back to Start after two seconds.
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Danger to life due to electric shock
High voltages are present in the inverter and its components. Touching live components results in death or serious injury
due to electric shock.
• Switch off the inverter.
• After switching the inverter off, wait 15 minutes before opening the inverter. This allows the capacitors to
discharge.
• Do not touch live components.
• Wear Hazard Risk Category 2 personal protective equipment.